Average annual temperature is 13.5 °C
Absolute maximum temperature: 32.6 °C
Absolute minimum temperature: -8.0 °C
Number of sunny days: 106 days
Number of rainy days: 243 days
Number of snow days: 16 days
Look at detailed online map of Nishitama-gun
* Weather data for Nishitama-gun Japan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 13.4 | 15.0 | 20.3 | 22.8 | 27.8 | 28.3 | 32.6 | 31.1 | 30.3 | 22.9 | 21.7 | 19.1 |
| Average daytime temperature (°C) | 6.1 | 8.0 | 13.1 | 17.4 | 19.6 | 23.0 | 28.7 | 28.9 | 26.2 | 18.6 | 14.8 | 10.1 |
| Average temperature (°C) | 1.7 | 3.1 | 8.6 | 12.0 | 15.3 | 19.6 | 24.4 | 24.6 | 22.3 | 14.3 | 10.3 | 5.6 |
| Average night temperature (°C) | -1.9 | -0.9 | 4.7 | 7.3 | 11.5 | 16.5 | 20.7 | 21.2 | 19.4 | 10.6 | 6.4 | 1.5 |
| Absolute minimum temperature (°C) | -8.0 | -5.0 | -2.6 | -0.8 | 6.4 | 11.6 | 17.2 | 18.8 | 13.3 | 5.1 | 0.1 | -4.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.3 | 8.1 | 7.9 | 9.0 | 8.9 | 7.4 | 10.1 | 11.0 | 9.1 | 8.5 | 7.7 | 7.8 |
| Precipitation (mm) | 49 | 75 | 172 | 126 | 254 | 383 | 105 | 170 | 305 | 138 | 69 | 40 |
| Sunny days | 12 | 13 | 10 | 9 | 9 | 2 | 6 | 1 | 3 | 9 | 16 | 16 |
| Rainy days | 8 | 12 | 21 | 21 | 22 | 28 | 25 | 30 | 27 | 22 | 14 | 13 |
| Snow days | 11 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The best time to visit Nishitama-gun during the most sunny months:
The largest precipitation sum in Nishitama-gun is at